diff --git a/test-requirements.txt b/test-requirements.txt
index f73ab635..1a8a17c0 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -2,7 +2,8 @@
 flake8
 flake8-import-order
 mock<=2.0.0
-requests-mock
+requests-mock;python_version >= '2.7'
+requests-mock<1.5.0;python_version < '2.7'
 coverage
 nose
 unittest2;python_version < '3.0'